/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package logic;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import model.Carrinho;
import model.ItemLinhaVenda;
import model.Produto;

/**
 *
 * @author root
 */
@WebServlet(name = "ServletCarrinho", urlPatterns = {"/ServletCarrinho"})
public class ServletCarrinho extends HttpServlet {

    /**
     * Processes requests for both HTTP
     * <code>GET</code> and
     * <code>POST</code> methods.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException 
    {
        String acao = request.getParameter("acao");
        
        if(acao.equals("exibe")) //exibe produtos no carrinho
        {
            HttpSession session = request.getSession();
            Carrinho carrinho = (Carrinho)session.getAttribute("carrinho");
            
            ArrayList<ItemLinhaVenda> ilv = carrinho.getListaDeProdutos();
            
            request.setAttribute("produtosNoCarrinho", ilv);
            
             RequestDispatcher dispatcher = request.getRequestDispatcher("carrinho.jsp");
             dispatcher.forward(request, response);
        }
        else if(acao.equals("finalizaCompra")) //finaliza compra e atualiza estoque
        {
            //atualiza estoque
            HttpSession session = request.getSession();
            Carrinho carrinho = (Carrinho)session.getAttribute("carrinho");
            Produto prod;
            
            ArrayList<ItemLinhaVenda> produtos = carrinho.getListaDeProdutos();
            
            for(int i=0; i< produtos.size(); i++)
            {
                prod = produtos.get(i).getProduto();
                prod.retiraDeEstoque(produtos.get(i).getQuantidade());
            }
            
            RequestDispatcher dispatcher = request.getRequestDispatcher("finaliza.jsp");
            dispatcher.forward(request, response);
        }
        else if(acao.equals("finaliza"))
        {
            HttpSession session = request.getSession();
            session.invalidate();
            
            RequestDispatcher dispatcher = request.getRequestDispatcher("index.jsp");
            dispatcher.forward(request, response);
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP
     * <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP
     * <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
